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Standards/Math/Alabama/PC.37

PC.37

PC Precalculus
PC.1
PC.10
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PC.2
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PC.37
PC.37.aPC.37.bPC.37.c
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PC.A-APRE
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PC.TF

Use trigonometric identities to solve problems.

PC.37.aUse the Pythagorean identity sin^2(θ) + cos^2(θ) = 1 to derive the other forms of the identity.PC.37.bUse the angle sum formulas for sine, cosine, and tangent to derive the double angle formulas.PC.37.cUse the Pythagorean and double angle identities to prove other simple identities.
Khan Academy Resources
Trig identity referencePythagorean identity reviewUsing the trig angle addition identitiesFind trig values using angle addition identitiesUse the Pythagorean identityTrig angle addition identitiesProof of the tangent angle sum and difference identitiesUsing trig angle addition identities: manipulating expressionsProof of the sine angle addition identityProof of the cosine angle addition identityProof of the Pythagorean trig identityUsing the tangent angle addition identityFinding trig values using angle addition identitiesUsing the Pythagorean trig identityUsing trig angle addition identities: finding side lengthsUsing the cosine angle addition identity
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